Liquid extruding device

ABSTRACT

A liquid extruding device comprises a base with a hollow portion, the wall of which is provided with positioning structure, the side and bottom of the base go through to an inlet end and an outlet end, respectively; a soft washer, which is held inside of the hollow portion and peripherally provided with positioning devices, has a oval through hole with a gyroidal groove; an extruding stick, which has a central post with an oval cross-section, goes through the soft washer such that the central post can interferentially operate with the hole, and that the other end of the extruding stick will be engaged and combined with the axis of the motor. Accordingly, rotation of the central post of the extruding stick inside the hole of the soft washer will result in gaps which exchange position with one another and move in one direction to match up the gyroidal groove of the hole, thereby forming a pump effect to drive liquid.

BACKGROUND OF THE INVENTION

(a) Technical Field of the Invention

The present invention relates to a liquid extruding device, particularly to one wherein rotation of an extruding stick inside of the soft washer would result in gaps which exchange position in one direction to form an effect of extruding and driving liquid.

(b) Description of the Prior Art

As disclosed in R.O.C. Patent Approval No. 527905 entitled “Automatic liquid dispensing mechanism”, the mechanism functions to make the liquid enter from one end and flow out from the other end, ad comprises a planet device, a hose and a housing. Wherein the planet device provided on the bottom of the housing includes a rotating plate, from the surface of which a number of axles are extruded, and each axle is sheathed by a roller; the hose, being a transmitting carrier, is in the form of an arc provided in-between the inner rim of the housing and the outer surface of the rollers; extrusions are provided on the hose and engaged in the opposite grooves of the housing; the outer surface of each roller contacted with the axis of the motor is driven to rotate by the motor; and the plate of the planet device pushes the hose circularly, thereby transmitting the liquid.

Considering that the above structure requires numerous components which requires time and cost in assembly, the inventor motivated the intention to research and disclose the invention as claimed, which, being a rather simplified design, is easily produced and cost economic.

SUMMARY OF THE INVETION

The primary object of the invention is to provide a liquid extruding device, wherein rotation of an extruding stick inside of the soft washer would result in gaps which exchange position in one direction to achieve an effect of extruding and driving liquid.

To obtain the objects, the invention comprises a base, which has a hollow portion; a soft washer, which is provided inside of the hollow portion of the base; and an extruding stick provided inside of soft washer. The hollow portion of the base is provided with positioning grooves around the wall, an inlet end at one side going through the hollow portion, and an outlet at the bottom going through the hollow portion. The soft washer is surrounded by positioning ribs corresponding to the positioning grooves, and interiorly provided with a hole having a threaded surface and going through the inlet and outlet ends. One end of the extruding stick has a non-circle central post, interferentially cooperating with the hole, for inserting into the hole of the soft washer, while the other end of the extruding stick has an engaging hole for connectedly receiving the axis of the motor.

Accordingly, rotation of the central post of the extruding stick inside the hole of the soft washer will result in gaps which exchange position with one another and move in one direction to match up the gyroidal groove of the hole, thereby forming a pump effect to drive liquid.

The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.

Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an exploded view of the present invention.

FIG. 3 is a cross-sectional view of the invention after being assembled.

FIG. 4 is a cross-sectional view of the invention in use.

FIG. 5 is a cut-away view of the soft washer of the invention.

FIG. 6 shows the gyroidal groove of the hole of the soft washer.

FIG. 7 is a perspective view of the extruding stick of the invention.

FIG. 8 is a cross-sectional view of the extruding stick.

FIG. 9 is a cut-away view of the central post of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following descriptions are of exemplary embodiments only, and are not intended to limit the scope, applicability or configuration of the invention in any way. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. Various changes to the described embodiments may be made in the function and arrangement of the elements described without departing from the scope of the invention as set forth in the appended claims.

Referring to FIGS. 1 to 9, the invention relates to a liquid extruding device, which is composed of a base 10, a soft washer 20, an extruding stick 30 and a motor 40. Gaps would occur when the oval central post 31 of the extruding stick 30 rotates inside the hole 21 of the soft washer 20. By way of the engagement of the oval central post 31 with the gyroidal groove 22 of the hole 21, gyroidal narrow gaps would form between the central post 31 and the gyroidal groove 22, the oval cross-section of which appear a gryoidal distribution. Besides, the periphery of the oval central post 31 is greater than the diameter of the hole 21 of the soft washer 20 such that the tolerance of the preferred interferential cooperation is 0.2 mm. While excessive interferential cooperation would run down the axis power of the motor 40, small interferential cooperation would require the bias of the axis of the motor 40 be controlled extremely precise, and subsequently the process and assembly should be precisely. As such, it is important to determine an appropriate interferential cooperation degree. Accordingly, the soft washer 20 is served as a sustainer, the oval central post 31 is served as a rotator, such that as the non-circle post rotates, the gyroidal gap on the hole wall can generate a extruding effect due to the change of the space, thereby the liquid exists in the gap would move and exchange position to form a pump-like effect to drive the liquid.

Referring to FIG. 2, the base 10 has a hollow portion 12 which is provided with positioning grooves 11 around the wall. The base 10 is provided with an inlet end 13 at one side going through the hollow portion 12, an outlet 14 at the bottom going through the hollow portion, and retaining holes 15 at the other end. Inside of the hollow portion 12 of the base 10 is provided with a soft washer 20 which is peripherally provided with positioning ribs 23 corresponding to the positioning grooves 11, thereby the soft washer 20 can be positioned in the hollow portion 12 of the base 10. The positioning grooves 11 provided on the wall of the hollow portion 12 share a circle with the corresponding positioning ribs 23 provided around the soft washer 20, such that the force generated by the firm engagement thereof can be evenly born. Meanwhile, the positioning grooves 11 and the positioning ribs 23 are replaceable by matching non-smooth walls. Inside the soft washer 20 is provided with a hole 21, which has an oval cross-section, goes through the inlet end 13 and outlet end 14, and interiorly provided with a gyroidal groove 22 (as shown in FIGS. 5 and 6).

Referring to FIGS. 7 and 9, the extruding stick 30 is provided at one side a central post 31, which has an oval cross-section (as shown in FIG. 9) and can be inserted into the hole 21 of the soft washer 20. The outer diameter of the central post 31 of the extruding stick 30 is greater than the diameter of the hole 21 of the soft washer 20. The preferred tolerance of their interferential cooperation is 0.2 mm, such that the central post 31 and the hole 21 can interferentially cooperate with each other. The other side of the extruding stick 30 is provided with a engaging hole 32 for connectedly receiving the axis 41 of the motor 40.

Further referring to FIGS. 2 and 3, between the extruding stick 30 and the motor 40 is provided with a spacer 34, which is provided with screw holes 35 corresponding to the retaining holes 15 on the base 10. By way of screws 80, the spacer 34 can be fastened to one end of the base 10. An O-ring 33 is further provided between the spacer 34 and the extruding stick 30. Accordingly, a novel liquid extruding device is accomplished.

As shown in FIGS. 3 and 4, when the motor 40 drives its axis 41 to rotate, the extruding stick 30 would be driven as well, subsequently the central post 31 having an oval cross-section would rotate. As the central post 31 rotates, the soft wash 20 would stay still since it is held in the hollow portion 12 of the base 10. Therefore, the central post 31 of the extruding stick 30 would rotate inside the hole 21 of the soft washer 20 and generate gaps. Rotation of the central post 31 inside of the soft washer 20 would result in gaps on the gyroidal groove 22; the gaps exchange position in one direction to form an effect of extruding and driving liquid, thereby the liquid will flow in the inlet end 13 and out the outlet end 14.

Concluded above, the liquid extruding device according to the invention can efficiently improve the disadvantages existing the prior art. Rotation of the central post 31 inside of the soft washer 20 would result in gaps on the gyroidal groove 22; the gaps exchange position in one direction to form an effect of extruding and driving liquid.

It will be understood that each of the elements described above, or two or more together may also find a useful application in other types of methods differing from the type described above.

While certain novel features of this invention have been shown and described and are pointed out in the annexed claim, it is not intended to be limited to the details above, since it will be understood that various omissions, modifications, substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those skilled in the art without departing in any way from the spirit of the present invention. 

1. A liquid extruding device, comprising: a base, which has a hollow portion provided with positioning grooves around the wall, an inlet end at one side going through the hollow portion, and an outlet end at another side going through the hollow portion; a soft washer, which is provided inside of the hollow portion of the base, surrounded by positioning ribs corresponding to the positioning grooves, and interiorly provided with a hole having a threaded surface and going through the inlet and outlet ends; an extruding stick, one end of which has a non-circle central post, interferentially cooperating with the hole, for inserting into the hole of the soft washer, while the other end of the extruding stick has an engaging hole for connectedly receiving the axis of the motor.
 2. The liquid extruding device accordingly to claim 1, wherein retaining holes are provided surround the open end of the hollow portion of the base.
 3. The liquid extruding device accordingly to claim 1, wherein the hole inside the soft washer has an oval cross-section and is gyroidally extended from one end of the soft washer through to the other end.
 4. The liquid extruding device accordingly to claim 1, wherein the positioning grooves provided on the wall of the hollow portion are corresponding to the positioning ribs provided around the soft washer, both of which sharing a circle, such that the force generated by the firm engagement thereof can be evenly born.
 5. The liquid extruding device accordingly to claim 4, wherein the positioning grooves provided on the wall of the hollow portion and the positioning ribs provided around the soft washer are replaceable by matching non-smooth walls.
 6. The liquid extruding device accordingly to claim 1, wherein the non-circle central post of the extruding stick has an oval cross-section.
 7. The liquid extruding device accordingly to claim 1, wherein the periphery of the non-circle central post of the extruding stick is greater than the diameter of the hole of the soft washer such that the tolerance of their interferential cooperation is 0.2 mm.
 8. The liquid extruding device accordingly to claim 1, wherein a spacer is provided between the extruding stick and the motor.
 9. The liquid extruding device accordingly to claim 8, wherein an O-ring is further provided between the spacer and the extruding stick. 